* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 16px 24px;
  background: #ffffff;
  border-bottom: 1px solid #dfe1e6;
}

.app-header h1 {
  font-size: 20px;
}

.add-task-form {
  display: flex;
  gap: 8px;
}

.add-task-form input {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  min-width: 220px;
  background: var(--column-bg);
  color: var(--text);
}

.add-task-form button {
  padding: 8px 18px;
  border: none;
  border-radius: 999px;
  background: var(--accent-orange);
  color: white;
  font-size: 14px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.add-task-form button:hover {
  background: var(--accent-orange-hover);
}

.board {
  display: flex;
  gap: 16px;
  padding: 24px;
  align-items: flex-start;
}

.column {
  flex: 1;
  min-width: 260px;
  background: #ebecf0;
  border-radius: 8px;
  padding: 12px;
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding: 0 4px;
}

.column-header h2 {
  font-size: 14px;
  text-transform: uppercase;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
}

.column-header .count {
  background: var(--border);
  border-radius: 10px;
  padding: 2px 8px;
  font-size: 12px;
  color: var(--muted);
  font-family: var(--font-mono);
}

.task-list {
  min-height: 60px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-list.drag-over {
  background: rgba(61, 59, 201, 0.15);
  border-radius: 6px;
}

.task-card {
  border-radius: 10px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  cursor: grab;
}

.task-card.dragging {
  opacity: 0.4;
}

.task-text {
  flex: 1;
  font-size: 14px;
  word-break: break-word;
  cursor: text;
}

.task-edit-input {
  flex: 1;
  font-size: 14px;
  padding: 4px 6px;
  border: 1px solid #4C9AFF;
  border-radius: 6px;
  background: var(--column-bg);
  color: var(--text);
}

.delete-btn {
  background: none;
  border: none;
  color: #6b778c;
  font-size: 16px;
  line-height: 1;
  cursor: pointer;
  padding: 2px 4px;
}

.delete-btn:hover {
  color: #de350b;
}

@media (max-width: 700px) {
  .board {
    flex-direction: column;
  }
  .column {
    width: 100%;
  }
}

:root {
  --bg: #0A0C10;
  --header-bg: #0A0C10;
  --border: #232733;
  --text: #E4E7EC;
  --column-bg: #12151C;
  --card-bg: #12151C;
  --muted: #8A93A6;
  --accent-gradient: linear-gradient(135deg, #3D3BC9, #4C9AFF);
  --accent-orange: #EA580C;
  --accent-orange-hover: #C2410C;
  --font-mono: ui-monospace, "SF Mono", Menlo, monospace;
}

body {
  background: var(--bg);
  color: var(--text);
}

.app-header {
  background: var(--header-bg);
  border-bottom-color: var(--border);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

#search-input {
  padding: 8px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 14px;
  background: var(--column-bg);
  color: var(--text);
}

#search-input::placeholder {
  color: var(--muted);
}

.board-tabs-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.board-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.board-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--column-bg);
  font-size: 13px;
  font-family: var(--font-mono);
  cursor: pointer;
}

.board-tab.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
}

.board-tab .tab-action {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 12px;
  color: inherit;
  opacity: 0.7;
}

.board-tab .tab-action:hover {
  opacity: 1;
}

#add-board-btn {
  padding: 6px 12px;
  border: 1px dashed var(--border);
  border-radius: 999px;
  background: none;
  color: var(--text);
  cursor: pointer;
  font-size: 13px;
  font-family: var(--font-mono);
}

.char-count {
  font-size: 11px;
  color: var(--muted);
  min-width: 40px;
}

.column {
  background: var(--column-bg);
}

.task-card {
  background: var(--card-bg);
  flex-direction: column;
  align-items: stretch;
  transition: transform 0.15s ease, opacity 0.15s ease, border-color 0.15s ease;
}

.task-card:hover {
  border-color: #4C9AFF;
  transform: translateY(-1px);
}

.task-top-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.task-card.entering {
  animation: card-in 0.2s ease;
}

@keyframes card-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.task-card.hidden-by-search {
  display: none;
}

.task-meta {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 4px;
  font-size: 11px;
  color: var(--muted);
  flex-wrap: wrap;
}

.priority-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.priority-low { background: #36b37e; }
.priority-medium { background: #EAB308; }
.priority-high { background: var(--accent-orange); }

.deadline-label {
  padding: 1px 6px;
  border-radius: 3px;
  background: var(--border);
  font-family: var(--font-mono);
}

.deadline-label.overdue {
  background: rgba(234, 88, 12, 0.15);
  color: var(--accent-orange);
  font-weight: 600;
}

.toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 1000;
}

.toast {
  background: var(--card-bg);
  color: var(--text);
  border: 1px solid #3D3BC9;
  padding: 10px 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 14px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
  animation: toast-in 0.2s ease;
}

@keyframes toast-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.toast button {
  background: none;
  border: none;
  color: #4c9aff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
}

#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
}

.login-card {
  text-align: center;
  padding: 2rem;
}

#google-login-btn {
  margin-top: 1rem;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  border: none;
  border-radius: 999px;
  background: var(--accent-orange);
  color: white;
  cursor: pointer;
  transition: background 0.15s ease;
}

#google-login-btn:hover {
  background: var(--accent-orange-hover);
}

#logout-btn {
  background: none;
  border: 1px solid #4C9AFF;
  border-radius: 999px;
  padding: 6px 14px;
  cursor: pointer;
  font-size: 13px;
  color: #4C9AFF;
  transition: background 0.15s ease;
}

#logout-btn:hover {
  background: rgba(76, 154, 255, 0.1);
}